Silphium integrifolium var. integrifolium

Endemic
Synonyms: Silphium integrifolium var. deamii Settle & Fisher Silphium integrifolium var. neglectum
Treatment appears in FNA Volume 21. Treatment on page 80.

Plants 40–200 cm. Leaves: blades scabrous, pilose, hispid, or glabrous. Phyllaries: abaxial faces usually hispid, pilose, or scabrous, rarely glabrous. Ray florets 12–22. Disc florets 70–140. 2n = 14.


Phenology: Flowering mid summer–early fall.
Habitat: Prairies, along roads and railroads
Elevation: 50–600 m

Distribution

V21-180-distribution-map.gif

Ala., Ark., Ill., Ind., Iowa, Kans., Ky., La., Mich., Miss., Mo., Nebr., Okla., S.Dak., Tenn., Wis.

Discussion

Selected References

None.

Lower Taxa

None.
Jennifer A. Clevinger +
Michaux +
Ala. +, Ark. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Mich. +, Miss. +, Mo. +, Nebr. +, Okla. +, S.Dak. +, Tenn. +  and Wis. +
50–600 m +
Prairies, along roads and railroads +
Flowering mid summer–early fall. +
Fl. Bor.-Amer. +
Silphium integrifolium var. deamii +  and Silphium integrifolium var. neglectum +
Silphium integrifolium var. integrifolium +
Silphium integrifolium +
variety +